"Monday through Friday belongs to our bosses, Sunday to our Lord," writes Brett Martin in the introduction to the hilarious photo shoot. "But Saturday, if only for a precious few hours, it's all about the boys -- about the sweet liberation that comes with standing tall and unfettered, proudly proclaiming, 'This, madam, is my junk. Now, kindly step aside and allow me into the museum.'" >>>See the stars in all their blurred glory at GQ.com!

Other highlights from the annual comedy issue include Bill Murray weighing in on making 'Garfield' ("I worked all day and kept going, 'That's the line? Well, I can't say that.' And you sit there and go, 'What can I say that will make this funny? And make it make sense?' And I worked. I was exhausted, soaked with sweat, and the lines got worse and worse.") and three covers with funnymen Paul Rudd, Tracy Morgan and Zach Galifianakis.